Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (1): 35-38 doi: 10.13538/j.1001-8042/nst.22.35-38

• RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICIN • Previous Articles     Next Articles

E-beam radiolysis of aqueous dimethyl phthalate solution

LIU Ning XU Gang MA Jing TANG Liang YUAN Qing WANG Liang BAI Yulei WU Minghong   

  1. Institute of Applied Radiation, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
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LIU Ning XU Gang MA Jing TANG Liang YUAN Qing WANG Liang BAI Yulei WU Minghong. E-beam radiolysis of aqueous dimethyl phthalate solution.Nuclear Science and Techniques, 2011, 22(1): 35-38     doi: 10.13538/j.1001-8042/nst.22.35-38

Abstract:

To investigate the influence of radiolysis on kinetics and factors of dimethyl phthalate(DMP), the aqueous DMP solution is degraded by 1.8 MeV E-beam, following pseudo-first-order kinetics. The rate constant of DMP degradation decreased exponentially with increasing initial DMP concentration. The DMP is favorably degraded by radical scavengers under its low concentration and alkaline condition. At high doses, the DMP is attacked by eaq – and ·OH, producing monomethyl phthalate, phthalate acid, and a series of aliphatic carboxylic acids, which are completely mineralized into H2O and CO2.

Key words: Dimethyl phthalate, E-beam, Degradation, Kinetics, Mechanism